Table 2. Summary of χ² test in nuclear families under the hypothesis of a single dominant gene controlled transmission.

Parent Geno.	Parent pairs	PAA in Offs.	PAa in Offs.	Paa in Off.	Obs. No.		Exp. No.		χ2	P-value
					WG	BB	WG	BB
Aa, aa	(103, 104),(107, 108),(301, 302),(305, 306),(309, 310),(311, 312),(313, 314)	0	$\frac{1}{2}$	$\frac{1}{2}$	6	9	7.5	7.5	0.6	0.44
Aa, Aa	(105, 106),(307, 308),(403, 404)	$\frac{1}{4}$	$\frac{1}{2}$	$\frac{1}{4}$	3	4	5.25	1.75	3.86	0.049
aa, aa	(120, 121),(122, 123),(315, 316), (405, 406)	0	0	1	0	5	0	5	0	1
A_, aa	(111, 112), (201, 202)	0	$1-\frac{\mathrm{q}}{2}$	$\frac{\mathrm{q}}{2}$	4	0	4 − 2q	2q	1.37	0.24
a_, aa	(113, 114),(303, 304)	0	$\frac{1-\mathrm{q}}{2}$	$\frac{1+\mathrm{q}}{2}$	0	4	2 − 2q	2 + 2q	1.30	0.25
Aa, A_	(203, 204), (401, 402)	$\frac{2-\mathrm{q}}{4}$	$\frac{1}{2}$	$\frac{\mathrm{q}}{4}$	2	0	$2-\frac{\mathrm{q}}{2}$	$\frac{\mathrm{q}}{2}$	0.29	0.59
A_, A_	(407, 408)	$\frac{{\left(2-\mathrm{q}\right)}^2}{4}$	$\frac{\mathrm{q}(2-\mathrm{q})}{2}$	$\frac{{\mathrm{q}}^2}{4}$	1	0	$1-\frac{{\mathrm{q}}^2}{4}$	$\frac{{\mathrm{q}}^2}{4}$	0.07	0.79
Total Chi-square									7.42	0.28

Geno = Genotypes; Offs = Offspring; Obs. No. = Observed number; Exp. No. = Expected number; BB: blue-black; WG: white-gold; q is the estimated probability of allele a in the population.